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Schottky barrier field-effect transistors (SBFETs) based on few and mono layer phosphorene are simulated by the non-equilibrium Green's function formalism. It is shown that scaling down the gate oxide thickness results in pronounced…

介观与纳米尺度物理 · 物理学 2014-08-22 Runlai Wan , Xi Cao , Jing Guo

The thermal power ($PF=S^2G_e$) depends on the Seebeck coefficient ($S$) and electron conductance ($G_e$). The enhancement of $G_e$ will unavoidably suppress $S$ because they are closely related. As a consequence, the optimization of $PF$…

介观与纳米尺度物理 · 物理学 2020-05-26 David M T Kuo

The Schottky barrier of a metal-semiconductor junction is one of the key quantities affecting the charge transport in a transistor. The Schottky barrier height depends on several factors, such as work function difference, local atomic…

介观与纳米尺度物理 · 物理学 2020-12-09 Line Jelver , Daniele Stradi , Kurt Stokbro , Karsten Wedel Jacobsen

The use of a foreign metallic cold source (CS) has recently been proposed as a promising approach toward the steep-slope field-effect-transistor (FET). In addition to the selection of source material with desired density of states-energy…

材料科学 · 物理学 2021-09-14 Juan Lv , Jing Pei , Yuzheng Guo , Jian Gong , Huanglong Li

The availability of transistors capable of operating at low supply voltage is essential to improve the key performance metric of computing circuits, i.e., the number of operations per unit energy. In this paper, we propose a new device…

介观与纳米尺度物理 · 物理学 2020-10-30 Demetrio Logoteta , Jiang Cao , Marco Pala , Philippe Dollfus , Youseung Lee , Giuseppe Iannaccone

Thermoelectric materials can be used to convert heat to electric power through the Seebeck effect. We study magneto-thermoelectric figure of merit (ZT) in three-dimensional Dirac semimetal Cd$_3$As$_2$ crystal. It is found that enhancement…

材料科学 · 物理学 2018-02-23 H. H. Wang , X. G. Luo , W. W. Chen , N. Z. Wang , B. Lei , F. B. Meng , C. Shang , L. K. Ma , T. Wu , X. Dai , Z. F. Wang , X. H. Chen

Vertical diamond Schottky diodes with blocking voltages $V_{\text{BD}} > 2.4 \text{ kV}$ and on-resistances $R_{\text{On}} < 400 \text{ m}\Omega \text{cm}^{2}$ were fabricated on homoepitaxially grown diamond layers with different surface…

600V/20A 4H-SiC Schottky barrier diodes (SBD) were fabricated to investigate the effect of key processing steps, especially before and after a formation of Schottky contact, on the electrical performances of SBD and on a long-term…

材料科学 · 物理学 2015-06-18 In-Ho Kang , Sang-Cheol Kim , Jung-Hyeon Moon , Wook Bahng , Nam-Kyun Kim

In 2008, Salahuddin and Datta proposed that a ferroelectric material operating in the negative capacitance region could act as a step-up converter of the surface potential in a MOS structure, opening a new route for the realization of…

介观与纳米尺度物理 · 物理学 2011-03-10 David Jimenez , Enrique Miranda , Andres Godoy

We report the temperature dependent capacitance-voltage characteristics of Pt/SrTiO3 Schottky diodes fabricated using compressively strained SrTiO3 thin films grown on (LaAlO3)0.3(Sr2AlTaO6)0.7 (LSAT) substrates. The measurements reveal a…

材料科学 · 物理学 2015-11-10 Amit Verma , Santosh Raghavan , Susanne Stemmer , Debdeep Jena

The dc voltage observed at low-temperatures in a 2D electron sample $without$ external excitation is accounted by the Schottky contact rectification of the noise generated in the measuring circuit. The rectified voltage is shown to depend…

强关联电子 · 物理学 2023-11-21 M. V. Cheremisin

In this study, a model of a Schottky-barrier carbon nanotube field- effect transistor (CNT-FET), with ferromagnetic contacts, has been developed. The emphasis is put on analysis of current-voltage characteristics as well as shot (and…

介观与纳米尺度物理 · 物理学 2009-11-13 S. Krompiewski

In this paper, we propose the application of a Dual Material Gate (DMG) in a Tunnel Field Effect Transistor (TFET) to simultaneously optimize the on-current, the off-current and the threshold voltage, and also improve the average…

介观与纳米尺度物理 · 物理学 2011-08-17 Sneh Saurabh , M. Jagadesh Kumar

In this paper, the Ni Schottky barrier on GaN epilayer grown on free standing substrates has been characterized. First, transmission electrical microscopy (TEM) images and nanoscale electrical analysis by conductive atomic force microscopy…

Vertical field effect transistors (VFETs) show many advantages such as high switching speed, low operating voltage, low power consumption, and miniaturization over lateral FETs. However, VFET still faces the main challenges of high…

计算物理 · 物理学 2025-01-08 Sirsendu Ghosh , Anamika Devi Laishram , Pramod Kumar

An aluminum nitride (AlN) Schottky barrier diode (SBD) was fabricated on a nonpolar AlN crystal grown on tungsten substrate by physical vapor transport. The Ni/Au-AlN SBD features a low ideality factor n of 3.3 and an effective Schottky…

We present a model for the leakage current in ferroelectric thin- film capacitors which explains two of the observed phenomena that have escaped satisfactory explanation, i.e. the occurrence of either a plateau or negative differential…

材料科学 · 物理学 2009-11-10 M. Dawber , J. F. Scott

In this paper, we have presented the impact of the gate leakage through thin gate dielectrics (SiO2 and high-\k{appa} gate dielectric) on the subthreshold characteristics of the tunnel field effect transistors (TFET) for a low operating…

介观与纳米尺度物理 · 物理学 2014-06-06 Poornendu Chaturvedi , M. Jagadesh Kumar

Gate-All-Around Field-Effect Transistors (GAAFETs), now entering high-volume production as successors to fin field-effect transistor technology, are enabling continued scaling and enhanced performance in advanced semiconductor nodes.…

其他凝聚态物理 · 物理学 2026-03-24 Juan P. Mendez , Coleman Cariker , Michael Titze , Alex A. Belianinov , Denis Mamaluy

In this paper, we report a novel chemical doping technique to reduce the contact resistance (Rc) of transition metal dichalcogenides (TMDs) - eliminating two major roadblocks (namely, doping and high Rc) towards demonstration of…